I bought a brand new AMT Government Model .45 back in '97. It jammed every 1 or 2 rounds. Hollowpoints would not feed at all.
Took it apart and found the frame and slide rails had the same rough, grit-blasted finish that the slide and frame had. Not good for reliable functioning.
So, I stoned the frame and slide rails and the trigger bow. Then I polished the feed ramp.
After that, it functioned perfectly, even with Cor-Bon 200 grain flying-ashtrays.
Hate that I sold it, but I sold it to purchase an EAA Witness .45 Wonder Finish.
The Witness has been a great gun since 1999. I love it.
Davis .380. POS is too good for it. Extractor flew off while shooting it. Never found the extractor pin or spring. Made a new pin from brazing rod, and used a ball point pen spring for an extractor spring. No more extractor problems.
Too bad it would only feed ball ammo. It wouldn't even feed lead roundnose ammo.
I unloaded it on a pawn shop quickly.
I once had a Jennings J-22 and it worked perfectly. Someone had to get that one. Guess it was me.
No problems with any Taurus or Rugers, so far. Kel-Tec P3AT works as it should.
Marlin 1894P. Bought brand new in 2000. Front sight screws were a few threads too long, had to file them down to get the front sight to stay still.
Rear sight blade broke at the holes where it folds. It was in the gun safe at the time and the sight was not folded down. Had to order a new sight from Brownells.
Wouldn't feed properly unless I RAPED the lever, and that damaged the bullets and brass. Not good for accuracy or reloading.
A few minutes with my Dremel, the flex-shaft, and a cone grinding stone and it had a feed ramp matching the factory feed ramp (slight bevel at the breech end of the barrel) of my 444P. Now it feeds anything.
It pains me to admit the problems I had with my little Marlin when brand new. It is my all time favorite rifle. I didn't feel like paying for shipping to and from Marlin to get it fixed. Figured I could do it myself for much less, and I did.
British Lee Enfield #4 Mk 2. Extractor spring broke the first time I loaded a round in the chamber. I bought the darned thing new, in the wrap. I wasn't too happy. But, since the part was cheap, and the Lee Enfields are my favorite bolt actions of all times, I didn't mind fixing it myself.
I guess the Davis was the only real POS. It was the only one I got rid of due to problems.
Then there's my Kimber Sporterized Swedish M96 Mauser 6.5x55mm.
Nice satin nickel finish. Low scope safety. Ram-Line Syn Tech stock. I free floated the barrel, pillar bedded the stock, and installed a Timney trigger.
Now I can't seem to get it to STOP shooting one hole groups.
Plus, it only takes 2 shots to sight in. Man, what is WRONG with that gun?
Yeah, I love that Swede Mauser. It's a tack driver. It was great before, but the little bit of work I put into it was time and money well spent.